Machine for extracting threads from fabrics.



PATENTED APR. 24, 1906.

H. C. FISCHER. MACHINE FOR EXTRAGTING THREADS FROM FABRICS.

APPLICATION FILED DEC. 6. 1905.

2 sHEBTs-sHEET 1 No. 819,010. PATENTED APR. 24, 190s.

- I H. 0. FISCHER. MACHINE FOR EXTRAGTING THREADS FROM FABRICS.

APPLICATION FILED DEC. 6. 1905.

2 SHEETS-SHEET 2.

'MWZAJAIZ @wfprrf construction. side vlews of 'a sliding cutter. 4o

UNITED STATES PATENT OFFICE.

HERMANN CHRISTIAN FISCHER. OF V ENNA, AUSTRIA-HUNGARY. MACHINE FOR, IEXTRIAIC-TING THREADS FROIVTFABRICS.

No. 19,010.v

To all whomit Uta-y concern: v Be it known that I, HERMANN CHRISTIAN FISCHER, mechanician, a subject of the Emeror of Austria-Hungary, and a resident of ienna, Austria-Hungary, have invented a new and useful Machine for Extracting Thre'adsfrom Fabrics, of which the following is a specification. The invention is a. machine for removing certain threads or parts of threads from woven fabrics, whereby ornamental effects are produced.

The machine comprises a toothed blade, which cooperates with a swinging or sliding cutter or with a cl ampin device, the blade forcing parts of-the threa s outof the fabric, while the cutter or clamp removes these parts during the u ward stroke of the blade.

The mac ine further comprises certain auxiliary knives or needles which pierce-the fabric in front of the extracting-blade, a feeding mechanism which grasps the fabric and inmoving it forward spreads it laterally, means for ad usting, the relative position of the knives or needles, and means for operating the several parts in predetermined order.

Referring to the accompanying drawings,

ivpeci fication of Letters Patent. Application filed December 6. 1905.- Seriel flu. 290,610.

Figure 1 is' aside elevation of the machine with art of the frame broken away. Fig. 2 is a p an view showingthe arrangement of the driving mechanism for the cutter and the fab ric-feeder, the frame-head being broken awav. Fig. 3 is 'a detail view.

trate the knife-support on larger scale. Fig. 6 illustrates two forms of the extracting blade. Fig. 7 is a sectional end elevation of the machine. Fig. 8 illustrates a modified Figs. 9 and lOrare front and Figs. 1 1 and.12 area front elevation and plan view, respectively, of a clan1ping-j aw which may be used instead of the cutter; and Fig. 13 is a plan view of thepresser-foot. Y

The machine-frame 1 maybe of any suitable shape. In the up er part of the frame is journaled the main sfi driven, as in ordinarv sewing-machines, by ,a belt passing over the pulley 3 The shaft passes into the frame-head. 4, where it'carries a'crank 5, which is connected, by'means of a pitlnan 6, with the vertically-reciprocable rod 7, to the lower end of which the extractingblade 8 is secured by a clamp screw 9; This blade 8 (shown in detail in Fig. 6) resembles a pointed-saw-blade, the teeth of which are ar Figs. 4 and 5 illu s aft 2, which may be Patented April 24,

ranged in steps. The size of the teeth and the angle at which the are arranged, as Well as the. width of thebl ade, depend upon the fineness of thefabric to be worked upon, The, teeth may be arranged on one or both sides of the blade, according to the number-of the threads to be extracted; In the frame-head 4 is another vertically-recipro'cable rod 10, which is coupled to the rod 7, so as to move with the latter. The rod 10 carries at its lower end a piece :11, which is adjustably mounted and is recessed below to receive a needle 12, as shown in Fig.7. The needle 12 is so arranged that it pierces the fabric in the spot into which the extracting-blade will enter at its next downward movement. By this needle the threads extending transverselyto those which are to be removed are separated in order to prevent the blade 8 from striking and pushing down such transverse threads, the needle thus acting as a piercer and threadseparator.

Asthe operation will not always be started at the edge of thefabric where the ends of the threads are loose, it is necessary to provide a knife 13 to cutthrough the fabric at the starting-point, and thus free one end of the thread which is to be extracted. This knife 13 is secured to the lower end of a vertical rod 14, which is reciprocably mounted within the frame-head 4 and is normally held in lifted position by means of a spring. Also located within the frame-head 4 is a vertically-ad justable rod 15, carrying the presser-foot 16, which is forced against the fabric by the spring 17 and may be lifted by means of the its front end a point 16", which is in line with 9 the knives and indicates the direction of the fabric-feeding movement. The vertical rods intlie frame-head are arranged in the line of feec f \Vithin the hollow frame of the machine is a pitman 20, driven by an eccentric on" the main shaft 2 and operating the cutter-shaft 21 by a crank 22. The shaft 21'revolves in bearmgs 23 23 and carries "upon the end'which is below the knife-rod 7 a crank 31 and 31, b which the thread-cutter 25 or 35 is actuate The swinging cutter 25 (shown in Fig. 7) is preferably provided with an oblique cutting edge, as shown in Fig. 2. ried by a piece 25','p'i'voted on a bolt 27,

This cutter is caroff the thread.

i5.the coverplate 34, Fig. 10.

2 5 receive parallel forks which receive the square rod 0 ergsiS 4S, 2, which are 45 having a wedge-shaped middle part 50.

6b dle is only necessary forthe For coarserwork'the arrangement shown in cutting edge is normally forced upward by a @ring 30,- connected to theend of thecutter- 1 carrier threaded through arm 31. This upward pressure is applied to the cutter in order to' .cause it to move smoothly along. the lower face of needle-plate 50, 3. and 'thus shear Instead of the swinging cutter a sliding one may be used, as shown in Figs. 9 and 10. In this case the crank-arm 31 on the shaft- 21 is connected by link 33 to a slide'32, which runs in guides 03, fastened to The slide 32 carries the cutter 35, which is screwed down upon the slide, but is vertically adjustable by niea'ns of an interposed wedge 36, operated by a screw and nut 36.

by the rock-shafts 3T 38-, journaled below the base and driven from the main shaft by the pitmen 39 40 and cranks 41 42. The outer ends of the shafts 3]. 38 are recessed to ivot-bolts -13 43. The shaft 37 is provided with two parallel arms 4-1 44, between which a square rod 45 is pivotally arranged. Theshaft 38 carries arms 46 -16, which support the apertured end of a plate The other end of the plate 47 has two -45. The crank %1 ,arn1s44 ti, and the niainshaft eccentric driving the pinned-39 are set to give the rod 45 an upward-and-downward 35 swinging motion, which is transmitted to the plate 47.

This upwardand downward motion of the plate 47 is combined with a forward-and-backward movement given by the arms 46 46. The plate 47 carries two feedrovided with roughened upper surfaces an with slotted flanges 49, loosely receiving retaining-bolts. The coverlate comprises two halves 34.34, between w ich is a narrow needle-plate 50, The halves of the cover-plate have opposed recesses 65, w hich. with the part 50, provide oblique openings to receive the feeders 48.. As these feeders niove'toward the operator in 50 depressed position, they are thus caused to approach each. other, moving freely by reason of the slots in'their flanges 49 and sliding along the convergent outer sides of the holes 654 but as they rise and move from the opera-tor, carrying the fabric, they are forced apart by the beveled sides of the pieceO, and t-hus'dlaw the fabric tight.

The combination of the extracting-blade with the prepiercing th 'eadse arating neenest' fabrics.

Fig. 8} is suflicient'. Here the rods 7 and 10 are not coupled together, but move independently. Both are driven from the main shaft 2 by means of a crank-disk 5, to which The fabric-feeding mechanism is actuated The upward movement on the 5 bolt- 27 is limited by an adjustable stop 26,

' its lowest position aheadot the rod 7. -The 1 The knife is fixed in a The knife 13 may be adjustably mounted in range the pitman 6 is ivotally connected, while the pitinan'5i of t ie knife-carrier 10 is driven,

rod 10 carries aflat knife-blade 52, (shown in detail in Figsv 4, 5.) which is secured to the lower end of the rod 10 by ineans of an adjusting mechanism comprising a slide 53, movable upon a square pin 5-]: in the line of feed. The pin 5i is arranged in another slide 55, which is adjustable in slots 56 of the rod-head 10 transverse-1v to the line of feed. ole in the slide 53-.

the same mannerto erniit an exact adjustment of'the knives, both in the line of feed and transversely thereto.

' Instead of the swinging or sliding cutter 25 or 35 a clam )ing-ja'w 57 may be used, which, as shown, ias a swinging motion, but

may reciprocate in a straight line. The

arm 58, carried by the shaft 21. The jaw has a roughened and curved surface and is pressed upward by means of an inclosed spring 59, Figs. 11 and 122, the action of the s iring being limited by a stop 60. The need le plate 50 is provided with three holes which correspond to the operating-knives or needles and register with the slots 16 in the resser-foot. In order to permit an'exact adjustment and a straight feeding, a magnifying-lens 51 may be laced in front of the feedln mechanism,-w ile a screen 62 is arto hide the reciprocating rods from the operators eyes. As shown, the lens is mounted in the screen.

The mode of operation of the machineem loying the thread-cutter below is .as follows: he fabric being brought "u on the coverplate 34, the resser-foot 16 is owered' as soon as the lens s ows its point 16 to be'directl'y over the line of threads to be extracted. In starting at a selvaged edge or at a point remote from the fabric ed e it is necessarv to cut and free one end of t e thread or threads to be extracted by manually operating the knife 13. The driving ,mechanismis then started. The saw-shaped blade 8 while going downward presses short ortions of some of the threads which extent at right a 'les to its broad surface down through the mi dle hole 63 01" the iece 50. During the upward stroke of the blhde the cutter '25 or 35 passes below the blade and cuts off those portions of the threads which stick out below the hole At-the next downward stroke the blade enters the hole'which the needle 12 has pierced clamping-jaw 57 is movable upon a square into the fabric during the previous down- 7.

ward stroke, which preve nts the extraction of other threads than those intended if the distance between the needle 12 and the blade 8 is chosen with due consideration to the feeding step and the weaving pattern. At each upward stroke of the extractin blade 8 a new portion of the threads to be extracted is brought-forward by means of the feeders 48 which grasp the fabric with their roughened surfaces and-spread it out as it advances, as they are; forced farther apart by .the wedge-shaped part 50 ofthe needleplate 50.

If the clamping-jaw 57 is used insteadof the cutter, or 35, the threads must be cut into small len ths. For this. purpose the knife. 52 is provided. If the operation is not started from the edge of. the. fabric or at of which is the combination of a saw-shaped means for removing the. deflected portion, as

a selvaged edge, one end of the thread or threads is cut and freed bv pressing down the knife '13, while the knife 52 passes down ahead of the saw-shaped blade 8 and cuts off pieces of the threads. These short pieces are thereupon pressed down throu h the hole 63 of the plate 50 by. the toothed blade. hen the blade 8 rises, the jaw 57 clam s the pieces against .the plate 50 and as t e fabric is moved forward the cia nped pieces are held and are ulled out of the fabric, falling from the mec anism as soon as the clampingq' aw leaves the plate 50.

It is obvious that-other details maybe added to the machine or thatparts may be changed for special wo'rk'within the-scope of the invention, the impprtant characteristic extracting-blade vi-th a relatively movable cutting or clamping device operating to re move from a fabric predetermined threads 'or arts of threads.

claim-- 1. A machine for extracting longitudinal threads from woven fabrics, comprising means .for engaging and deflecting a short portion of a. thread or threads, and means for removing the deflected portion, as set forth.

In a machine for extracting threads, me'ans comprising a laterall\-'-toothed reci rocating blade, to deflect a short portion of a: thread or threads, .and means for removing the deflected portion, as set forth.

3. In a machine for extracti threads means comprising a reciprocating 'lade-havmg lateral teeth arran ed in steps, to deflect a short portion of a thread or threads, and

set forth.

4. In a machine for extracting threads, means for enga ing and deflecting a short portion only ni a thread or threads, and means for severing the deflected portion, as set forth.

5. In a machine for extracting threads, means constructed to deflect a short portion pf a thread or threads. said means con1prismg a reciprocating blade, and a cutter movable agamst the deflected portion, as set forth.

6. In a machine for extracting threads,

rocating blade to deflecta short portion of a thread or threads, and a reciprocating cutter for severing the deflected portion, as set forth. In a machine for extracting threads, means constructed to deflect a short portion of a thread or threads, said means comprising a. reciprocating blade, and an oscillating cuttor for severing the deflected portion, as set forth. i 8. In a machine for extracting threads, 0. thread-separating device, means for engaging and deflecting a short portion of a thread or threads, and means forremoving the deflected portion, as set forth.

9. In a machine for extracting threads, a reciprocating piercer and thread-Se arator, a reciprocating thread-deflector, an a cutter for severing the deflected thread portion, as set forth.

10. In a machine for. extracting threads 8. fabric-support having openings, means or feeding t 1e fabric step by step, a reciprocate ing piercer and thread-separator, a reciprocating thread-deflector, and a cutter for severin the deflected thread portion, as set forth.

11. In a machine for extracting threads, a fabric-support having openings, a resserfoot having a pointer, means .10! fee ingthe fabric ste by step, a reciprocating iercer 95 and threa -separator, a reciprocating t read deflector, and a cutter for severing thedeflect- 8d thread portion, as set forth.

12. i In a machine for extracting threads, 11. fabric-support having openings; a. presserfoot --havmg a pointer, a .magnifyinglens, means for feeding the fabric step by step, athread-separator, a thread-deflector, and a cutter for severing the deflected thread portion, as set forth.

13. In a machine for extracting threads, a fabric-support havin openings; means for fe'edin thefabric stepb step,areci rocating threa -separator, a reclprocatin t read-deflector, a cutter for severing the deflected 110 thread portion, and a screen for the moving parts, as set forth.

14. In a machine for extracting threads, a fabric-su port having an opening; means for feeding t e fabric step by step, a thread-de- 5 flector constructed to en age a-short ortion of a thread or threads and force them t rou h said 0 ening, and means for removing the efiecte thread portion, as set forth.

15. In a machine for' extracting threads, a 120 fabric-support, means for feeding the fabric step by ate and for drawing it tight as it advances, a t read-deflector, and means for removing the deflected thread portion, as set forth.

16. In a machine for extracting threads, 8. fabric-support, means for feeding the fabric step by step and for drawing it tight at each step, comprising reciprocating feeders and.

means comprising a laterally-toothed recipmeans for separating said feeders as they ad- 3 Correction in Letters Patent 81 9310.

' 19. In a machine tor extracting threads,'an:

initial thread-cutter, a-thread-separator, a

the Patent 015%.-

[sauna] word longitudinalf' shonld rea'd body; ith thi's'cdi-r dt ioh herein that the sam Sigo'ed and sealed this18jtb day of M i. 1).,1906.

thread-deflector; and means for removing the deflected thread portion, as set forth.

20. In a machine for extracting threads, an initial thread-cutter, means for feeding the fabric and for spreading it 'laterally as it advances, a thread-separator, a thread-deflector, and means for removing the deflected thread portion, as set rorth.

" In testimony whereof I have signed -my It is-hereby certified that in Letters Patent No. 819,010, gran ted April 24 1906 upon the application of Hernmn Christian Fischer,-of Vienna, for an miprorernent iin Machines for Extraciing Threads from Fabrics, an error 1n the printed specification requiring correction, as follows In line 37, nage '3, -t -he and that said Letters Patent shouldhe read e may conform to the record of 'the ease in F. I. 'ALLEIi',

name to this specification in-the presence, of 25 Correction in Letters Patent 81 9310.

' 19. In a machine tor extracting threads,'an:

initial thread-cutter, a-thread-separator, a

the Patent 015%.-

[sauna] word longitudinalf' shonld rea'd body; ith thi's'cdi-r dt ioh herein that the sam Sigo'ed and sealed this18jtb day of M i. 1).,1906.

thread-deflector; and means for removing the deflected thread portion, as set forth.

20. In a machine for extracting threads, an initial thread-cutter, means for feeding the fabric and for spreading it 'laterally as it advances, a thread-separator, a thread-deflector, and means for removing the deflected thread portion, as set rorth.

" In testimony whereof I have signed -my It is-hereby certified that in Letters Patent No. 819,010, gran ted April 24 1906 upon the application of Hernmn Christian Fischer,-of Vienna, for an miprorernent iin Machines for Extraciing Threads from Fabrics, an error 1n the printed specification requiring correction, as follows In line 37, nage '3, -t -he and that said Letters Patent shouldhe read e may conform to the record of 'the ease in F. I. 'ALLEIi',

name to this specification in-the presence, of 25 Correction in L 1906, upon the applieation of Hermann Christian Fischer, of Vienna, Austria-Hungary, for an improvement in Machines for Extracting Threads from Fabrics, an error appears in the printed specification requiring correction, as follows: In line 37, page -3, the sironld read body; and that said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent ()tfice.

Signed and sealed word longitudinal this 8th day of May, A. D., 1906.

F. I. ALLEN, Commissioner of Patents.

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